I think you're hitting the exception because you passed trackScores=true to ToParentBlockJoinCollector. If you do that, the ScoreMode cannot be None... I'll update the javadocs to make this clear, and I'll also fix the exception message.
I think you're hitting the infinite loop because your parent document is first, not last, in the group. Try putting the parent (shirt) document last in each case instead... Query-time join is already committed to trunk and 3.x, so it'll be in 3.6.0/4.0. Mike McCandless http://blog.mikemccandless.com On Fri, Mar 23, 2012 at 12:27 AM, Li Li <fancye...@gmail.com> wrote: > hi all, > I read these two articles > http://blog.mikemccandless.com/2012/01/searching-relational-content-with.html, > http://blog.mikemccandless.com/2012/01/tochildblockjoinquery-in-lucene.htmland > wrote a test program. But it seems there is some problem. it ends with > endless loop. > Here is my program, almost copy from that article, the only > modification is from BlockJoinQuery to ToParentBlockJoinQuery because I > can't find BlockJoinQuery in latest 4.0 dev trunk source tree. > another modification is from SocreMode.none to ScoreMode.Avg because > when using SocreMode.None, an exception throws: > Exception in thread "main" java.lang.IllegalStateException: ScoreMode is > None > at > org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.swapChildScores(ToParentBlockJoinQuery.java:270) > at > org.apache.lucene.search.join.ToParentBlockJoinCollector.copyGroups(ToParentBlockJoinCollector.java:251) > So I change ScoreMode.None to Avg > // BlockJoinQuery skuJoinQuery = new BlockJoinQuery(skuQuery, shirts, > // ScoreMode.None); > ToParentBlockJoinQuery skuJoinQuery = new > ToParentBlockJoinQuery(skuQuery, shirts, > ScoreMode.Avg); > > > Then I run again, it ends up with endless loop in BooleanScorer2: > public void score(Collector collector) throws IOException { > collector.setScorer(this); > while ((doc = countingSumScorer.nextDoc()) != NO_MORE_DOCS) { > collector.collect(doc); > } > } > > current doc is -1, and countingSumScorer.nextDoc() always return -1! > following is my program. btw, what's the status of query time join? what's > the relationship of solr's join and lucene's join? > -------------my codes------------- > public class TestJoin { > > /** > * @param args > * @throws Exception > */ > public static void main(String[] args) throws Exception { > File f=new File("./testindex"); > if(!f.exists()){ > f.mkdirs(); > } > Directory dir=FSDirectory.open(f); > for(String name:dir.listAll()){ > dir.deleteFile(name); > } > IndexWriterConfig conf=new IndexWriterConfig(Version.LUCENE_40,new > WhitespaceAnalyzer(Version.LUCENE_40)); > IndexWriter writer=new IndexWriter(dir, conf); > FieldType fType=new FieldType(); > fType.setIndexed(true); > fType.setStored(true); > fType.setIndexOptions(IndexOptions.DOCS_AND_FREQS); > fType.setTokenized(true); > Document shirt=new Document(); > shirt.add(new Field("name","three wolf",fType)); > shirt.add(new StringField("type", "shirt")); > Document sku1=new Document(); > sku1.add(new StringField("size","small")); > sku1.add(new StringField("color","blue")); > Document sku2=new Document(); > sku2.add(new StringField("size","small")); > sku2.add(new StringField("color","black")); > Document sku3=new Document(); > sku3.add(new StringField("size","medium")); > sku3.add(new StringField("color","black")); > Document sku4=new Document(); > sku4.add(new StringField("size","large")); > sku4.add(new StringField("color","gray")); > List<Document> shirtGroup=new ArrayList<Document>(); > shirtGroup.add(shirt); > shirtGroup.add(sku1); > shirtGroup.add(sku2); > shirtGroup.add(sku3); > shirtGroup.add(sku4); > writer.addDocuments(shirtGroup); > > shirt=new Document(); > shirt.add(new Field("name","seven wolf",fType)); > shirt.add(new StringField("type", "shirt")); > sku1=new Document(); > sku1.add(new StringField("size","large")); > sku1.add(new StringField("color","blue")); > sku2=new Document(); > sku2.add(new StringField("size","small")); > sku2.add(new StringField("color","black")); > > shirtGroup=new ArrayList<Document>(); > shirtGroup.add(shirt); > shirtGroup.add(sku1); > shirtGroup.add(sku2); > writer.addDocuments(shirtGroup); > writer.close(); > > IndexSearcher searcher=new IndexSearcher(DirectoryReader.open(dir)); > Filter shirts = new CachingWrapperFilter(new QueryWrapperFilter( > new TermQuery(new Term("type", "shirt")))); > BooleanQuery skuQuery = new BooleanQuery(); > skuQuery.add(new TermQuery(new Term("size", "small")), Occur.MUST); > skuQuery.add(new TermQuery(new Term("color", "black")), Occur.MUST); > // BlockJoinQuery skuJoinQuery = new BlockJoinQuery(skuQuery, shirts, > // ScoreMode.None); > ToParentBlockJoinQuery skuJoinQuery = new > ToParentBlockJoinQuery(skuQuery, shirts, > ScoreMode.Avg); > > BooleanQuery query = new BooleanQuery(); > query.add(new TermQuery(new Term("name", "wolf")), Occur.MUST); > query.add(skuJoinQuery, Occur.MUST); > > ToParentBlockJoinCollector c = new ToParentBlockJoinCollector( > Sort.RELEVANCE, // sort > 10, // numHits > true, // trackScores > false // trackMaxScore > ); > searcher.search(query, c); > > Sort skuSort=new Sort(new SortField("size",Type.STRING)); > TopGroups hits = c.getTopGroups(skuJoinQuery, skuSort, 0, // offset > 10, // maxDocsPerGroup > 0, // withinGroupOffset > true // fillSortFields > ); > System.out.println("totalHitCount: " + hits.totalHitCount); > System.out.println("totalGroupedHitCount: " + > hits.totalGroupedHitCount); > for(GroupDocs group:hits.groups){ > System.out.println("totalHits: "+group.totalHits); > for(ScoreDoc doc:group.scoreDocs){ > System.out.println(doc.doc+", "+doc.score); > } > } > } > > } --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
